polyfills are correctly resolved now, but some crypto polyfill is not implemented yet

[clangenb]

Blocker: unjs/unenv#177

Currently getting the following error during encryption:

 Error: Error during encryption. Original error: Error: [unenv] crypto.createHash is not implemented yet!

Workarounds:

• (again) try to make the vite-polyfils-plugin working (or maybe a combination of unenv/vite), created bug report: Bug: importing 'crypto' polyfill leads to error exports is not defined with yarn build && yarn preview in nuxt davidmyersdev/vite-plugin-node-polyfills#92
• migrate crypto in encointer-js to another lib
• maybe the node-rsa v1.1.2 with its own polyfills can resolve the issue: when is v1.1.2 released? rzcoder/node-rsa#234
• use clientNodeCompat: true: won't work, it uses unenv under the hood, see Client side node js support #11

[clangenb]

doesn't fix anything

[brenzi]

there are so many "unimplented" calls in unenv node crypto that I fear this rabbit hole is deep. simply implementing crateHash will likely just lead us to the next missing piece

[brenzi]

AFAIU, polkadot-api uses wasm for crypto stuff. They clearly implemented hashing and I geuss even RSA could we just use polkadot api to do the missing stuff?
https://www.npmjs.com/package/@polkadot/wasm-crypto

hint on RSA:
https://polkadot.study/tutorials/wallet-with-polkadot-js-and-react-with-typescript/step3#basic-concepts
but I couldn't find that.

A more involved option would be to replace RSA with NaCl:
https://github.com/polkadot-js/common/tree/master/packages/util-crypto/src/nacl
this might allow us to have an ed25519 key for asymmetric encryption (saw hints at this but no impl), but we'd need to touch the worker as well, a "breaks everything" change

[brenzi]

better docs on NaCl asymmetric encryption:
https://pynacl.readthedocs.io/en/latest/public/

tracking issue: integritee-network/worker#1597

[clangenb]

No longer needed, fixed crypto with #13